Impulse stimulated “explosive” crystallization of sputter deposited amorphous (In,Ga)Sb films

Rapid irreversible exothermic amorphous-to-polycrystalline phase transformations have been observed in sputter deposited (In,Ga)Sb films. The transformation was triggered in approximately 10 −7 sec in a local region of the film using a sufficiently large energy pulse induced by, for example, a pulse...

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Published in:Solid state communications 1978-07, Vol.27 (1), p.17-20
Main Authors: Wickersham, C.E., Bajor, G., Greene, J.E.
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Language:English
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description Rapid irreversible exothermic amorphous-to-polycrystalline phase transformations have been observed in sputter deposited (In,Ga)Sb films. The transformation was triggered in approximately 10 −7 sec in a local region of the film using a sufficiently large energy pulse induced by, for example, a pulsed laser or a mechanical impulse. When the sum of the heat of crystallization released from a given domain and the energy supplied by external heating was sufficient to trigger a neighboring domain then the transformation propagated throughout the sample with an average velocity on the order of 200 cm/sec. The critical temperature for propagation was dependent upon the film composition, growth conditions, and thermal history. A qualitative model to explain these results is discussed.
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title Impulse stimulated “explosive” crystallization of sputter deposited amorphous (In,Ga)Sb films
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